Cters



3 Sheets-Sheet 1. H. G. LANGREHR.

(No Mpdel.)

COMPOUND PUMP.

Patented Aug. 14, 1883.

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Sheet 2 3 R. H E R G N A L C.

COMPOUND PUMP.

No. 283,257. Patented Aug. 14, 1883.

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WITNEEEEEI I UNITED STATES PATENT @FFICE.

HENRY G. LANGREHR, OF SAN FRANCISCO, CALIFORNIA.

COMPOUND PUMP.

SPECIFICATION forming part of Letters Patent N0. 233,257, dated August 14, 1883 Application filed February 7, 1883, (No model.)

To all whom it may concern:

Be it known that I, HENRY O. LANGREI-IR, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Compound Pumps, of which the following is a specification.

changeable lifting-cylinder, and Fig. 4 is a plan view of the same." Fig. 5 is a plan view, showing the position of the lower valve-seats; and Fig. 6 is a plan view of one of the lower valves. Fig. 7 is a vertical section of Fig. 5.

Fig. 8 is a sectional side elevation, showing a modification. Fig. 9is asectional view, showing the means for securing the. air-chamber within the main casing of the pump. Fig. 10 is a bottom view of the suction-valve.

Similar letters of reference are used to des ignate like parts throughout the several views. The pump-case A is cast in the form shown, and is provided at its base with a projecting square flange, 13, adapted to be mortised into the deck-planks, and by matching upon two of its sides with the seams between the planks a snug flt can be had and the joints calked.

.Suitable bolt-holes are made in this flange for the purpose of securing the pump in place. By having the base thus countersunk into the 'deck a much firmer support and foundation is had for the pump than when it is set flush with the deck: The lower portion, 0, of the base is provided with an opening which receives the bilge-pipe D, and is provided with a lift or suction valve, E. At one" side of the bilge-opening there is formed a second opening provided with a lift-valve, F, and communicating with a chamber, G, situated below the main chamber or drum of the pump, as shown in Fig. 1, and extending from side to side, as indicated by dotted lines in Fig. 5

and shown ill-Fig. 7. At either end of the 1 and 9, and is also provided with two rabbets, N N, which are somewhat longer than the width of the lugs K K, the outer faces of which have anunder-cut or bevel correspond ing 'with the bevel of the flange L, andin prac. tice the air-chamber is passed down within the pump-drum until its progress is arrested by its upper flange, and the lugs K K are fitted within the rabbets N N.- A short turn to the right is then given the air-chamber, and the beveled portion of the rim or flange is brought under the undercut lugs K K, by which means the airchamber is prevented from being forced upward by the pressure of water from below. The lower face or bottom of the air-chamber is provided with a lift-valve, O, and the upper face or top" is provided with a pipe, P, which extends downward to within a short distance of the bottom. The upper part of this pipe has a screw-thread formed upon it by which to attach a hose-pipe or cap, as may be required. The central part of the airchamber is provided with a bore or opening, Q, provided near its upper end with a ring of packing, B. This opening or bore forms a passage-way for the travel of the hollow plunger S, which is cylindrical in form, and has a head or diaphragm, T, placed within it some distance from the lower end, in order that a chamber, U, may be left at the lower end, which will increase the capacity of the pump without increasing its external dimensions.

To the upper face of the diaphragm or head, T, I bolt the clevis-iron V, to which'is pivoted the connecting-link W, having at its upper end the crossbolt X, under which is hooked the outer end of the lever Y, that is pivoted to the lug Z, which is clamped by a loo set-screw, A, to the head B, formed upon the upper edge of the pump-case. The upper surface or short arm of the lever Y is provided with sockets G C, which receive the 5 handspikes D, by which the pump is operated; and the upper portion of the lug to which this lever is pivoted is provided with a buffer or cushion, E, of rubber or leather, which prevents the short arm of the lever from coming in contact with the metal of the lug r end to regulate the rise of the valve.

' and the consequent jar to the pump.

The lift-valve O is provided with a downwardly-proiecting stemplaying within a bearing, F, and having a small stud at its lower The valve E has a three-ribbed downwardly-extending guide, G, which gives weight to and balances the valve. Both this valve and the valve F are provided up on their opposite sides with prongs H H, Figs. 6 and I0, which embrace set-bolts I I J J, Figs. 1, 7, and 8, by means of which the lift of the valves can be regulated; and in order to obtain a socket for the reception of the screw-bolts of the valve F, I form two posts, K K, which extend down through but do not bar the passage G, as is shown at Fig. 7. these valves is to be faced with leather or rubber washers, and where the pump is used for pumping vinegar, wines, or acids the valves should be of the kind known as groundjoint valves.

- Suitable lifting-rings, L L, are attached to the upper face of the air-chamber, and to 3 5 which a purchase may be rigged for the purpose of lifting the chamber out of the pump should it become frozen or rusted in.

The operation of the pump above described will be as follows, to wit: WVhen it becomes necessary to pump from the bilge, the bolts J J are screwed down and clamp the valve F firmly upon its seat. The plunger S is now raised, when water will flow through the valve E into the suction-chamber, completely filling 5 it. Upon the downstroke of the plunger the suction or bilge valve will close, and the water will be forced through the valveway 0 into the air-chamber, and from thence up the pipe I and discharged over the spout onto the deck,

or conducted through a hose-pipe to any desired point. The compressed air in the upper part of the chamber will insure a steady stream at all times. Should it become necessary to take water from over the side, a hose- I 5 pipe is attached to one of the openings H of the chamber G. The valve E is clampedaipon its seat and the valve F is slackened, and upon operating the plunger the action will be The under side of all .the air-chamber M is removed from the pump,

and in lieu thereof I insert the cylinder M and its forked connecting-link N, (shown in Figs. 3, 4, and 8,) and which is identical in its construction and mode of operation to that shown and described in my application for Letters Patent for an improved ships pump filed November 3, 1882, and to which reference is made.

In the modification shown in Fig. 8 I cast the bodyof my pump with but one suctionopening 5 but either the cylinder M", last above mentioned. or the air-chamber lWI may be cmployed. This form of construction is .partic ularly applicable in breweries or manufactories, or for agricultural purposes, and in all locations where the source of supply is permanent. i

From the foregoing it will be seen that I am enabled to dispense with an auxiliary airchamber or airdome, thereby reducing the cost of the pumping mechanism, and at the same time to secure great compactness and solidity of construction; and I have found from actual practice that the interchangeability of the air-chamber and the lift-cylinder. is of great advantge where the same pump is used for pumping different kinds of liquids, and where it is necessary to conduct or direct the flowing liquid to various points.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. In a compound pump, the combination, with the casing A, having lugs K K, of the air-chamber M, provided with lifting-rings L L, and having a beveled flanged rim, L, and rabbets N, substantially as described.

2. In a compound pump, the combination, with the casing A, inclosing a reciprocating: cylinder or plunger, of the lever Y, movable lug Z, and buffer E, substantially as described.

3. A compound pump having a shell or casing, A, cast in one piece, and provided internally with an annular guide-bearing, I, and water-tight packing .I, substantially as de scribed.

In testimony that I claim the foregoing I have hereunto set my hand and'seal.

HENRY C. LANGREHR. [L s.]

\Vitnesses:

\VILMER BRADFORD, OHAs. E. KELLY. 

